• Title/Summary/Keyword: karst cave

Search Result 23, Processing Time 0.021 seconds

A geologic - environmental study of Gosu Karst Cave

  • Yoo, Jae-Shin
    • Journal of the Speleological Society of Korea
    • /
    • v.34 no.35
    • /
    • pp.43-51
    • /
    • 1993
  • Gosu Karst Cave 지역은 우리나라에서도 Karst rocks가 가장 잘 발달된 곳이며 특히 이 지역은 고생대의 조선계 대석회암통에 해당된다. Karst Cave와 여러가지 형태의 생성물은 지질시대부터 생성에 알맞는 고기후학적인 조건과 지구화학적인 여건이 결합하여 풍화작용의 결과로 이루어진 것이다. Cave의 발달 방향은 지층의 주향과 거의 일치하며 지금도 이러한 형성작용은 진행되고 있다. Cave 내부의 기후환경의 영향으로 Cave내에 서식하는 생물은 7목 9종이 확인 및 채집되었다.

  • PDF

A Study on the Ubiquitous Cave Systems (유비쿼터스 동굴시스템에 관한 연구)

  • Oh, Jong-Woo
    • Journal of the Speleological Society of Korea
    • /
    • no.90
    • /
    • pp.35-56
    • /
    • 2009
  • The purpose of this paper is to analyze the implementation of the karst infrastructure systems for the u-cave. IT based u-cave represents spatial information derived fields, such as geographical distribution of the cave boundaries, physical configuration of the cave locations and formation characteristics of the karst history. These three aspects relate to karst infrastructure systems, cave monitoring center and spatial database implementation. In terms of the IT based u-cave infrastructure implementation systems, the u-cave depends on IT contents and spatial features. uIT contents are strongly related to IT839 strategy due to the national agenda is "u-Korea". Cave should contribute to u-cave construction through the spatial analyses methods including USN, RFID, LiDAR, ELD, and GIS technologies. For these methods various cave functions will guide to u-cave's distribution, location, and characteristics of karst. The infrastructure consists of landforms and speleothem facilities, underground related facilities, environmental protection systems, and cave planning. These six units of the cave infrastructures have spatial databases that consist of spatial configuration, such as 4-D in order to draw the spatial distribution of the limestone and lava caves. IT based u-cave system infrastructure implementation should deal with IT convergence to generate fusion affects.

China's Cave Resources Distribution and Cave Research (중국의 동굴 자원과 동굴 연구)

  • Jin, Shi-Zhu
    • Journal of the Speleological Society of Korea
    • /
    • no.95
    • /
    • pp.23-33
    • /
    • 2009
  • This study analyzed the distribution of China's caves and cave resources in Research. The results are as follows: First, China's melting karst caves are mainly distributed in southwest widely distributed. Recently in Beijing and other northern areas found in many caves. First, China's Karst caves are mainly distributed in karst-flung southwest. Recently in Beijing and other northern areas found in many caves. Second, although China is widespread volcanic landscapes, but most of the extinct volcano, the lava caves less so. Are mainly distributed in Hainan Island, north-east there are some distribution. Third, China's recent development and evolution of the cave, analysis of the paleo-environment records of cave stalagmites, cave biology, cave tourism development, environmental aspects of cave research more active.

Karst in the Korean Peninsula

  • Oh, Jong-Woo
    • Journal of the Speleological Society of Korea
    • /
    • no.78
    • /
    • pp.33-41
    • /
    • 2007
  • Alpine caves, subterranean passages, are extensively controlled by folds and faults. Caves of the regions demonstrate a significant dip of the passages due to the structural deformations. There are many vertical voids and shaft. Speleo-scapes in the internal caves are various. Calcite formations show the water table alternations which indicate the uplifting and erosional base level droppings during at least the Quaternary. Around cave entrenches there are remnants of the Fluvial terraces on the middle of the hills. These relationship between cave locations and terraces will generate a key to the Plestocene history of the south Korean peninsula. Hence, the Korean karst is turned as "the overburden alpine karst".

Characteristics of Lime-cavities and Survey Design for Bridge Foundation in the Karst Area (석회 공동의 특성과 카르스트 지역 내 교량 기초를 위한 조사 설계)

  • 윤운상;김학수;최원석
    • Proceedings of the Korean Geotechical Society Conference
    • /
    • 1999.03a
    • /
    • pp.399-406
    • /
    • 1999
  • Recently, the construction of the several highway bridges in the karst area have encountered severe problems associated with cavities and sinkholes. To solve this problems, it is important to understand the distribution characteristics of cavities in the construction site on limestone area. This paper briefly describes the different types, the distribution control factors and the infill sediment types of lime-cavities in the study area, bridge site in the karst area and propose the effective method of survey design. Cavity system may be divided into two main groups, 1)'slot and cave system'and 2)'sinkhole and cave system'. And the shape, the size and the distribution pattern of cavity are controlled by three main factors - rock type, geological structure and ground water condition. Additionally, infill sediment may be considered as one of the important design factors for foundation design and divided into four types by sediment properties. There are geophysical thechnics and geologic survey and drilling test, etc. by the survey method to interpretate characteristics of cavity system, and this methods are optimally designed at the site investigation stage.

  • PDF

American Cave and Karst Center - A Place for Everyone

  • Opel, Dan
    • Journal of the speleological society of Korea
    • /
    • no.4
    • /
    • pp.97-100
    • /
    • 1996
  • The American Cave and Karst Center - the name might lead one to believe that this museum is a place for specially - focused, highly technical caverns, and scientists. While the museum will appeal to these individuals, it will by no means exclude anyone else. In fact, this article will demonstrate that the museum is a place for everyone! The following categories will show those who will find something of interest to themselves in the museum(omitted)

  • PDF

Location determining method of critical sliding surface of fillings in a karst cave of tunnel

  • Lin, P.;Li, S.C.;Xu, Z.H.;Huang, X.;Pang, D.D.;Wang, X.T.;Wang, J.
    • Geomechanics and Engineering
    • /
    • v.16 no.4
    • /
    • pp.415-421
    • /
    • 2018
  • A location determining method is proposed for critical sliding surface in the stability analysis of the filling materials in karst caves. First, a preliminary location of the sliding surface is determined based on simulation results which includes displacement contour and plastic zone. The sliding surface will locate on the bottom contact interface when the friction angle is relative small. However, a weakened contact interface always becomes the critical sliding surface no matter what the friction angle is. Then when the friction angle becomes larger, the critical sliding surface inside fillings can be determined by a parabola, the coefficient of which increases linearly with the friction angle under the same cohesion. Finally, the critical sliding surface approximately remains unchanged with friction angle. The influence of cohesion is similar to that of friction angle. Although affected by shape, size or position of the karst cave, the critical sliding surface mainly depends on both friction angle and cohesion. Thus, this method is always useful in determining the critical sliding surface.